Loose leaf binder



March 9? 1937. G, H DAWSON 2,073,049

LOOSE LEAF BNDER l Filed Dec. 29. 1934 2 Sheets-sheet 1 INI 'EN TOR.

650965 ff. 0A 1460A/ March 9, 19:37.

G. H. DAwsoN 2,073,049

LOOSE LEAF BINDER Fled'Dec. 29. 1934 2 Sheets-Sheet 2 lli 1 Il' Patented Mar. 9, 1937 UNITED STATES PATENT OFFICE'.I

LOOSE LEAF BINDER Application December 29, 1934, Serial No. 759,611

s claims. (cl. 12s- 17) 'I'his invention relates to a loose leaf binder particularly adapted to receive a plurality of banks of overlapping sheets and to shift a portion of the contents relative to the rest of the contents.

It is an object of this invention to provide a loose leaf binder with simple and eflicient means for shifting one series of sheet retaining prongs relative to the other series of sheet retaining prongs. It is a further object of this invention to provide means for permitting shifting movement of one series of sheet retaining prongs when the binder is in either its open or intermediate position. It is a further object of this invention to provide means for readily converting a shiftbinder to a non-shift binder or a non-shift binder to a shift binder. Other objects of this invention will become apparent upon reading the following description, taken in conjunction with the accompanying drawings, in which Figure 1 is a fragmentary perspective view of a loose leaf binder embodying the invention;

Figure 2 is a fragmentary top plan view of the binder in open` position;

Figure 3 is a cross sectional view of the binder in closed position;

Figure 4 is a view similar to Figure 3, showing the binder in intermediate position; and

Figure 5 is a view similar to Figures 3 and 4, showing the binder in open position.

In the drawings, the reference numerals 2, 3 indicate a pair of back sections hinged together by means of a hinge pintle 4 which passes through a plurality of hinge sleeves 5 and 6, extending from the inner edges of the back sections 2 and 3, respectively. The back section 2 comprises two wall members 'I and 8, and the back section 3 comprises two similar wall members 8 and III.

A box member I I is secured in the back section 2. The box member II comprises a top wall I2,

approximately parallel to the wall 1, and a pair of side walls I3 and I4 extending substantially perpendicular to the wall I2. The wall I4 is provided with a plurality of integral extensions which Aare curled to form hinge sleeves, as indicated at I5, Figure 2, to secure one side of the box member in the back section. The other side wall I3 is secured to the wall 8 by means of tongues (not shown) projecting from the wall 8 through slots ,0 in the Wall I3, or by welding or riveting. The

other back section 3 has a box member I6, similar to the box member II, secured therein. The` side Wall I'l of the box member is provided with integral hinge sleeves I8, by which it is secured to the back section 3, and the other side wall I9 is secured to the wall I0 in the same manner as the side wall I3 is secured to the wall 8. Each box member is closed at its ends by cap members, indicated at 20 and 2I, Figure 1. It will be understood that the outer exposed surfaces of the back sections 2 and 3 may be covered with fiber, leather, fabric or any suitable material to enhance the appearance of the completed book.

A flat curved bar 22 is welded or riveted to the underside of the top wall I2 adjacent each end of the binder and has its curved end projecting through the side wall I4. The curved end of the bar 22 is provided with a pair of teeth 23 adapted to project through a slot 24 into the box member I6. A slide bar 25 is secured adjacent the inner side of the wall I1 in any suitable manner. The slide bar has a turned end 26 projecting' through the end cap 2| to facilitate manipulation of the slide bar. 'I'he slide bar 25 is provided with a notch 21 adjacent each bar 22 so that the teeth 23 may be engaged with the edge 28 adjacent the notch 21 to retain the binder in either closed or intermediate position.

When the bar 25 is moved inwardly the edge 28 is disengaged from the teeth 23 so that the binder may be moved to open position. A spring 29, having one end secured to a pin 30 projecting from the bar 25, and its other end secured to a pin 3I projecting inwardly from the top wall of the box member I6, opposes the inward movement of the bar 25 and forces the bar 25 back to its normal position as soon as the end 26 is released. Consequently, if the end 26 is pushed in and then release-d as soon as the opening movement of the binder is started, the back sections will be stopped in their intermediate position by the engagement of the edge 28 with the outer tooth 23. If the end 26 is held against the action of the spring 29, the sections may be moved from closed to open position in one continuous movement. l

A plate 32, carrying a plurality of prongs 33, is mounted in the back section 2. The plate 32 is held against lateral or vertical movement by a plurality of ears or projections 34, bent from the outer edge of the back section, and 35, struck out from the wall I2. The inner edge of the plate 32 abuts the wall I2 of the box member II.

A hinge plate 36 is rigidly secured to the prong carrying plate 32 by welding or riveting. The outer edge of the hinge plate 36 is provided with a plurality of extensions curled to form hinge sleeves 31. A complementary hinge plate 38 provided With hinge sleeves 39 is rigidly secured to a cover member 48. A hinge pintle 4|, threaded -through the hinge sleeves 3'I and 39 hinges the cover member 40 to the hinge plate 36.

From the foregoing it can be seen that the cover member 40 is free of any direct connection with 5 the back section 2, but is secured to the prong carrying plate 32 through the hinge plate 36. The prong carrying plate 32 may be moved longitudinally of the back section 2. 'I'he cover mem ber 40 shifts longitudinally with the prong carrying plate. The ears or projections 34 iit in between the hinge sleeves 31 so as to limit the shifting movement.

The back section 3 is provided with a plate 42v carrying a plurality of prongs 43. The plate 42 has a hinge plate 44 rigidly secured thereto. A cover member 45 is hinged to the hinge plate 44. The cover 45 and the prong carrying plate 42 could be made shiftable in the same manner as the cover member 40 and the prong carrying plate 32, but it is preferred to weld or rivet the prong carrying plate 42 to the back section 3 so that only one cover may be shifted.

The prongs 33 and 43 are adapted to retain a plurality of banks of overlapped sheets 46. When it is desired to create a space between two consecutive sheets 46, all the sheets in front of the proposed space are thrown on to the left side of the binder and the binder is then'moved to either the intermediate or open position. Then the cover member 40 is moved to its shift position and the sheets of the bank in which the space is to be created are moved to the right side of the binder and the cover is then returned to its normal position and the binder is closed.

If a space is to be closed between two consecutive sheets, the cover member is moved to its shift position before the sheets in front of the space to be closed are moved to the left of the binder. After these sheets are moved to the left of the binder it is necessary only to move the cover to its normal position and then to close the binder.

The prong plate 32 is provided with an arm 4'I (Figure 2) which projects through an elon- 45 gated slot 43 in the wall I4 of the box member I I.

The wall II of the box member I6 is provided with a slot 49 which is long enough to receive the arm 4'I only when the prong carrying plate 32 is in its normal position. Accordingly, it is 50 impossible to close the binder when the prongsare in shift position.

The prong carrying plate 32 and hinge plate 36 are provided with a plurality of threaded apertures 50, and the back section 2 is provided 55 with a plurality of threaded apertures (not shown) adapted to register with the apertures 56 when the prong carrying plate 32 is in its normal position. A plurality of screws (not shown) may be threaded into said apertures to convert the 60 binder to a non-shift binder. If it is desired to re-convert the binder to a shift binder, the screws may be removed.

Although I have described my invention in considerable detail, it will be imderstood that the description thereof is illustrative, rather than restrictive, as many details may be modied or changed without departing from the spirit or scope of the invention. Accordingly, I do not desire to be restricted to the exact details of construction described, except as limited by the appended claims.

I claim:

1. In a loose leaf binder, a back section, a prong canying plate slidably secured to said back section, and an outer cover member hinged to said prong carrying plate whereby said prong carrying plate may be slid by manipulation of said outer cover member.

2. In a loose leaf binder, a pair of back sections hinged together, a prong carrying plate secured to each of said back sections, and a pair of outer cover members, one of said cover members being movable longitudinally relative to said back sections, one of said prong carrying plates being connected to said last mentioned cover member so as to be longitudinally movable therewith.

3. InA a loose leaf binder, a back section, a prong carrying plate slidably secured to said back section, an outer cover member hinged to said prong carrying plate, said prong carrying plate being slidable by manipulation of said outer cover member, and a plurality ofears on said back section adapted to limit the sliding movement ofsaid prong carrying plate and said cover member.

4. In a loose leaf binder, a back section, a prong carrying plate slidably positioned on said back section, a plurality of hinge sleeves projecting beyond the outer edge of said prong carrying plate, and a plurality of ears integral with said back section projecting from the outer edge thereof between said hinge sleeves and overlying the outer edgeof said prong carrying plate to cooperate with said hinge sleeves to limit the sliding movement of said prong carrying plate.

5. In a loose leaf binder, a pair of back sections hinged together, a pair of prong carrying plates. mounted on said back sections, and a hinge plate permanently secured to each of said prong carrying plates, an outer cover member hinged to each of said hinge plates, one of said prong carrying plates being movable longitudinally of its back section by manipulation of its outer cover member.

6. In a loose leaf binder, an outer cover member, a back section, a prong carrying plate slidably secured to said back section, a plurality of hinge elements projecting from one edge of said prong carrying plate, a plurality of complementary hinge elements projecting from one edge of said cover member, a pintle inserted in 4said hinge elements to hingedly connect said cover member and said prong carrying plate, and means on said back section cooperating with said first mentioned hinge elements to limit the sliding movement of said prong carrying plate.

GEORGE H. DAWSON.

DISCLAIMER 2,073,049.-G'eorge H. Dawson, Chicago, IH. LOOSE LEAF BINDER. Patent dated March 9, 1937. Disclaimer filed May 24, 1940, by the assignee, Wilson- Jones Company. Hereby enters this disclaimer to claims l and 3 of said patent.

[O cz'al Gazette Jane 25, 1.940.] 

